EP3540522B1 - Retrograde display mechanism for a timepiece - Google Patents

Retrograde display mechanism for a timepiece Download PDF

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Publication number
EP3540522B1
EP3540522B1 EP18161388.6A EP18161388A EP3540522B1 EP 3540522 B1 EP3540522 B1 EP 3540522B1 EP 18161388 A EP18161388 A EP 18161388A EP 3540522 B1 EP3540522 B1 EP 3540522B1
Authority
EP
European Patent Office
Prior art keywords
drive
rack
return
pivot axis
mobile component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18161388.6A
Other languages
German (de)
French (fr)
Other versions
EP3540522A1 (en
Inventor
Cédric Reymond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harry Winston SA
Original Assignee
Harry Winston SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harry Winston SA filed Critical Harry Winston SA
Priority to EP18161388.6A priority Critical patent/EP3540522B1/en
Priority to JP2019042364A priority patent/JP6694534B2/en
Priority to KR1020190028062A priority patent/KR102197430B1/en
Priority to CN201910191104.8A priority patent/CN110275423B/en
Priority to US16/299,185 priority patent/US11320787B2/en
Priority to RU2019106777A priority patent/RU2708531C1/en
Publication of EP3540522A1 publication Critical patent/EP3540522A1/en
Application granted granted Critical
Publication of EP3540522B1 publication Critical patent/EP3540522B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/241—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars the date is indicated by one or more hands
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/26—Racks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/08—Geometrical arrangement of the graduations
    • G04B19/082—Geometrical arrangement of the graduations varying from the normal closed scale
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/26—Clocks or watches with indicators for tides, for the phases of the moon, or the like
    • G04B19/268—Clocks or watches with indicators for tides, for the phases of the moon, or the like with indicators for the phases of the moon
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/001—Internal gear therefor, e.g. for setting the second hand or for setting several clockworks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B47/00—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece

Definitions

  • the invention relates to a clockwork display mechanism, comprising at least a first retrograde drive means of a first display of a first magnitude, and a second retrograde drive means of a second display of a first magnitude.
  • said first retrograde drive means comprising a first drive rake arranged to exert, directly or indirectly, on a first driving wheel set of said first display a force opposed to a resistant force exerted by a first return rake
  • said second retrograde drive means comprising a second drive rake arranged to exert, directly or indirectly, on a second driving wheel set of said second display, a force opposed to a resistant force exerted by a second return rake.
  • the invention also relates to a timepiece movement comprising such a display mechanism.
  • the invention also relates to a timepiece, in particular a watch, comprising such a timepiece movement, and / or such a display mechanism.
  • the invention relates to the field of retrograde clockwork display mechanisms, in particular for watches.
  • the retrograde display is a popular complication in watchmaking, and which allows a plurality of distinct displays to be distributed over a dial, each remaining clearly legible.
  • the retrograde display mechanisms each occupy a large volume in the case of a watch, and it is not always possible to house them correctly to provide the user with a display with a logical juxtaposition of the various displayed quantities.
  • the document EP1918792A1 in the name of LONGINES describes a timepiece comprising a bidirectional corrective mechanism for a display device of a quantity related to time, the display device being actuated by a control rocker itself controlled by a cam on which the control rocker is pressed.
  • the timepiece comprises a correction member actuated by a control rod which, in the correction phase of the display device, makes it possible to move aside, via a return latch, the control latch from the path of the cam on which the control latch is normally supported during the normal operating phase of the timepiece.
  • the invention proposes to develop a combination between several retrograde displays, which is easily adaptable to the volumes still available in a watch case, and by requiring the smallest possible thickness, while making use of customary components of moderate cost.
  • the invention relates to a clock display mechanism according to claim 1.
  • the invention also relates to a timepiece movement comprising such a display mechanism.
  • the invention also relates to a timepiece, in particular a watch, comprising such a timepiece movement, and / or such a display mechanism.
  • the invention relates to a clockwork display mechanism 100, for a timepiece 1000, and more particularly for a watch.
  • This display mechanism 100 comprises at least a first retrograde drive means 10 of a first display 11 of a first size, and a second retrograde drive means 20 of a second display 21 of a second size.
  • the invention is illustrated in the figures for a non-limiting variant where the first quantity is the minute, and where the second quantity is the hour.
  • the first retrograde drive means 10 comprises a first drive rake 12, which is arranged to exert, directly or indirectly, on a first drive wheel 16 of the first display 11, a force opposed to a resistant force exerted by a first recall rake 17.
  • the second retrograde drive means 20 comprises a second drive rake 26, which is arranged to exert, directly or indirectly, on a second drive wheel 210 of the second display 21, a force opposed to a resistant force exerted by a second booster rake 29.
  • first mobile 16 and the second mobile 210 are coaxial along a pivot axis D0. More particularly still, the first mobile 16 and the second mobile 210 are coaxial with a roadway that comprises a clockwork movement 500, arranged to drive the display mechanism 100, or in which this display mechanism 100 is incorporated, according to this. same pivot axis D0.
  • the pivot axis of the first drive rake 12 is distant from the pivot axis of the first return rake 17 and / or the pivot axis of the second drive rake 26 is distant from the pivot axis of the second return rake 29.
  • the pivot axis D1 of the first drive rake 12 for the minutes is distant from the pivot axis D6 of the first return rake 17 for the minutes, and the pivot axis of the second rake drive 26 hours is coincident with the pivot axis D2 of the second return rake 29 hours.
  • the first drive rake 12 is arranged to exert indirectly on the first mobile 16, through a first reverser 15, of pivot axis D5, meshing with the first mobile 16, a force opposed to a resistant force exerted directly on the first mobile 16 by the first return rake 17.
  • the second drive rake 26 is arranged to exert directly on the second drive wheel 210 of the second display 21, a force opposed to a resistant force exerted by the second return rake 29.
  • the first drive rake 12 is arranged to exert directly on the first mobile 16 a force opposed to a resistant force exerted indirectly on the first mobile 16, through a first reversing return gear meshing with the first mobile 16, by the first recall rake 17.
  • the second drive rake 26 is arranged to indirectly exert on the second mobile 210, through a second reversing gear meshing with the second mobile 210, a force opposed to a resistant force exerted directly. on the second mobile 210 by the second return rake 29.
  • the second drive rake 26 is arranged to exert directly on the second mobile 210 a force opposed to a resistant force exerted indirectly on the second mobile 210, through a second return reversing return meshing with the second mobile 210, by the second return rake 29.
  • the pivot axis D1 of the first drive rake 12 is remote from the pivot axis D6 of the first return rake 17, and the pivot axis of the first mobile 16 is located between the axis of pivoting D1 of the first drive rake 12 and the pivot axis D6 of the first return rake 17.
  • the first drive rake 12 is arranged to exert indirectly on the first mobile 16, through the first reversing gear 15 meshing with the first mobile 16, a force opposed to a resistant force exerted directly on the first mobile 16. by the first return rake 17, and the pivot axis D5 of the first reversing gear 15 is located between the pivot axis D1 of the first drive rake 12 and the pivot axis D6 of the first return rake 17.
  • the pivot axis of the second drive rake 26 is remote from the pivot axis of the second return rake 29, and the pivot axis of the second mobile 210 is located between the axis of pivoting of the second drive rake 26 and the pivot axis of the second return rake 29.
  • the second drive rake 26 is arranged to indirectly exert on the second mobile 210, through a second reversing gear meshing with the second mobile 210, a force opposed to a resistant force exerted directly. on the second mobile 210 by the second return rake 29, and the pivot axis of the second reversing gear is located between the pivot axis of the second drive rake 26 and the pivot axis of the second return rake 29 .
  • the first retrograde drive means 10 is arranged to control a dragging and retrograde movement of the first display 11, and the second retrograde drive means 20 is arranged to control a jumping and retrograde movement of the second display 12.
  • the first retrograde drive means 10 comprises a first cam 34, which comprises a first ramp 35, which is arranged to drive a first feeler 14 which the first drive rake 12 comprises in a working stroke in a first direction of drive of the first display 11.
  • This first feeler 14 is here the end of an arm substantially perpendicular to the general direction in which the first drive rake 12 extends, in its middle.
  • This first cam 34 comprises, on the largest diameter of the first ramp 35, a threshold 36, which is followed by a release 37 for disengaging the first drive rake 12, and which is arranged to allow the return of the first probe. 14 on the smallest diameter of the ramp 35 under the action of a return torque exerted indirectly on the first drive rake 12 by the first return rake 17 during an empty return stroke of the first drive rake. reminder 17.
  • the first cam 34 is a snail cam.
  • the first retrograde drive means 10 is arranged to drive the second retrograde drive means 20 by means of a pawl.
  • This pawl carries a drive finger 19, which is arranged to drive an input mobile 22, of pivot axis D7, and which the second retrograde drive means 20 comprises, during the empty return stroke.
  • the first cam 34 is driven from a mobile motor 30, which is arranged to be driven by a movement 500, or which comprises a movement 500, and in particular by means of a gear train.
  • the gear train comprises at least one friction link arranged to allow adjustment of the position of the first display 11.
  • a similar friction link can be inserted elsewhere, in the drive train of the first display 11, and / or the second display 21, or any other display that the display mechanism 100 includes.
  • the gear train comprises, in the variant of the figures, from the motor wheel 30, a friction wheel 31 and a friction wheel 32, the wheel 31 meshes with a pinion 33, of pivot axis D4, carrying the first cam 34 .
  • the first return rake 17 carries the drive finger 19, which is pivoting and is subjected to the torque of a return spring 43 fixed to the first return rake 17, and which is supported on a boss 44 or the like.
  • This drive finger 19 is arranged to drive a star which the input mobile 22 comprises, and which is arranged to drive in rotation a second cam 23 which the second retrograde drive means 20 comprises.
  • the second cam 23 comprises a second ramp, which is arranged to drive a second feeler 27, which the second drive rake 26 comprises, in a working stroke in a first direction of drive of the second display 12.
  • This second feeler 27 is here the end of an arm inclined by approximately 60 ° with the general direction of the second drive rake 26, in its middle.
  • This second cam 23 comprises, on the largest diameter of the second ramp, a threshold 24 followed by a disengagement 25 of the second drive rake 26, and which is arranged to allow the return of the second probe 27 on the plus small diameter of the ramp 35 under the action of a return torque exerted indirectly on the first drive rake 12 by the first return rake 17 during an empty return stroke of the first return rake 17.
  • the drive finger 19 is engaged with the input mobile 22 during the empty return stroke, and disengaged from this input mobile 22 during the working stroke.
  • the second cam 23 is a snail cam whose second ramp is smooth.
  • the second ramp of the second cam 23 is a stepped cam comprising a stage for each unit of the second quantity.
  • first return rake 17 is permanently subjected to the return torque exerted by a first jumper spring 41, for example resting on a boss or a first pin 42; and the second return rake 29 is more particularly permanently subjected to the return torque exerted by a second spring-jumper 47, resting on a second pin 48, or the like.
  • both the pivot axis of the first drive rake 12 is remote from the pivot axis of the first return rake 17, and the pivot axis of the second drive rake 26 is remote from the pivot axis of the second return rake 29.
  • the non-limiting variant illustrated relates to the case where the first display 11 is a minute display, and the second display 21 is an hour display.
  • the first display 11 is an hour display
  • the second display 21 is an AM / PM or day / night or date display.
  • the first display 11 is an AM / PM or day / night or date display
  • the second display 21 is a month or lunar month display.
  • the first display 11 is a month or lunar month display
  • the second display 21 is a year display.
  • the display mechanism 100 comprises a date display, which includes a friction gear, with a friction wheel 31 and a friction wheel 32, along the axis D3, and which friction gear is incorporated in the cog between the mobile motor 30 and the first cam 34.
  • the information is taken on the roadway of the movement, the date friction is used as a reference to the pinion 33 of the first cam mobile 34.
  • This first cam 34 rotates 360 ° and drives the first. feeler 14 of the first drive rake 12 on a stroke here about 25 °.
  • This angle referred to the center of the display on the pivot axis D0 by the toothing 13 of the first drive rake 12, in combination with the first return 15 and the first mobile 16, displays the minutes over an angular amplitude of 140 °, as visible on the figure 3 . It is recalled with the first recall rake 17, the minute display is thus dragging and retrograde.
  • the first recall rake 17 is armed with the minute drive, its on-board pawl clicks on the retrograde hours star 22 when it is loaded, without dragging it. After a period of 60 minutes, the fall of the first return rake 17 drives its on-board pawl, the driving finger 19 of which strikes the star 22, and applies its rotation to it.
  • a jumper 46 combined with a jumper spring 45 allows the star 22 to be held in position after its rotation. During each jump, the star 22, which here has twelve teeth, turns 1/12 of a turn.
  • the time display is jumping and retrograde.
  • the invention also relates to a timepiece movement 500 comprising at least one such display mechanism 100. More particularly, this movement 500 comprises an input mobile 30, which is arranged to drive the first retrograde drive means 10.
  • the invention also relates to a timepiece, in particular a watch 1000, comprising such a movement 500, and / or at least one such display mechanism 100. More particularly, the timepiece movement 500 is designed to drive a mobile. input 30 of the display mechanism 100.

Description

Domaine de l'inventionField of the invention

L'invention concerne un mécanisme d'affichage d'horlogerie, comportant au moins un premier moyen d'entraînement rétrograde d'un premier afficheur d'une première grandeur, et un deuxième moyen d'entraînement rétrograde d'un deuxième afficheur d'une deuxième grandeur, ledit premier moyen d'entraînement rétrograde comportant un premier râteau d'entraînement agencé pour exercer, directement ou indirectement, sur un premier mobile d'entraînement dudit premier afficheur un effort opposé à un effort résistant exercé par un premier râteau de rappel, et ledit deuxième moyen d'entraînement rétrograde comportant un deuxième râteau d'entraînement agencé pour exercer, directement ou indirectement, sur un deuxième mobile d'entraînement dudit deuxième afficheur, un effort opposé à un effort résistant exercé par un deuxième râteau de rappel.The invention relates to a clockwork display mechanism, comprising at least a first retrograde drive means of a first display of a first magnitude, and a second retrograde drive means of a second display of a first magnitude. second magnitude, said first retrograde drive means comprising a first drive rake arranged to exert, directly or indirectly, on a first driving wheel set of said first display a force opposed to a resistant force exerted by a first return rake, and said second retrograde drive means comprising a second drive rake arranged to exert, directly or indirectly, on a second driving wheel set of said second display, a force opposed to a resistant force exerted by a second return rake.

L'invention concerne encore un mouvement d'horlogerie comportant un tel mécanisme d'affichage.The invention also relates to a timepiece movement comprising such a display mechanism.

L'invention concerne encore une pièce d'horlogerie, notamment une montre, comportant un tel mouvement d'horlogerie, et/ou un tel mécanisme d'affichage.The invention also relates to a timepiece, in particular a watch, comprising such a timepiece movement, and / or such a display mechanism.

L'invention concerne le domaine des mécanismes d'affichage rétrogrades d'horlogerie, notamment pour montres.The invention relates to the field of retrograde clockwork display mechanisms, in particular for watches.

Arrière-plan de l'inventionBackground of the invention

L'affichage rétrograde est une complication prisée en horlogerie, et qui permet de répartir, sur un cadran, une pluralité d'affichages distincts, restant chacun bien lisible.The retrograde display is a popular complication in watchmaking, and which allows a plurality of distinct displays to be distributed over a dial, each remaining clearly legible.

Toutefois, les mécanismes d'affichage rétrograde occupent chacun un volume important dans la boîte d'une montre, et il n'est pas toujours possible de les loger correctement pour offrir à l'utilisateur un affichage avec une juxtaposition logique des différentes grandeurs affichées.However, the retrograde display mechanisms each occupy a large volume in the case of a watch, and it is not always possible to house them correctly to provide the user with a display with a logical juxtaposition of the various displayed quantities.

Le document EP1918792A1 au nom de LONGINES décrit une pièce d'horlogerie comprenant un mécanisme correcteur bidirectionnel pour un dispositif d'affichage d'une grandeur liée au temps, le dispositif d'affichage étant actionné par une bascule de commande elle-même commandée par une came sur laquelle la bascule de commande est en appui. La pièce d'horlogerie comprend un organe de correction actionné par une tige de commande qui, en phase de correction du dispositif d'affichage, permet d'écarter, via une bascule de rappel, la bascule de commande du trajet de la came sur laquelle la bascule de commande est normalement en appui en phase de fonctionnement normal de la pièce d'horlogerie.The document EP1918792A1 in the name of LONGINES describes a timepiece comprising a bidirectional corrective mechanism for a display device of a quantity related to time, the display device being actuated by a control rocker itself controlled by a cam on which the control rocker is pressed. The timepiece comprises a correction member actuated by a control rod which, in the correction phase of the display device, makes it possible to move aside, via a return latch, the control latch from the path of the cam on which the control latch is normally supported during the normal operating phase of the timepiece.

Résumé de l'inventionSummary of the invention

L'invention se propose de développer une combinaison entre plusieurs affichages rétrogrades, qui soit facilement adaptable aux volumes encore disponibles dans une boîte de montre, et en requérant la plus faible épaisseur possible, tout en faisant appel à des composants usuels et de coût modéré.The invention proposes to develop a combination between several retrograde displays, which is easily adaptable to the volumes still available in a watch case, and by requiring the smallest possible thickness, while making use of customary components of moderate cost.

A cet effet, l'invention concerne un mécanisme d'affichage d'horlogerie selon la revendication 1.To this end, the invention relates to a clock display mechanism according to claim 1.

L'invention concerne encore un mouvement d'horlogerie comportant un tel mécanisme d'affichage.The invention also relates to a timepiece movement comprising such a display mechanism.

L'invention concerne encore une pièce d'horlogerie, notamment une montre, comportant un tel mouvement d'horlogerie, et/ou un tel mécanisme d'affichage.The invention also relates to a timepiece, in particular a watch, comprising such a timepiece movement, and / or such a display mechanism.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, où :

  • la figure 1 représente, de façon schématisée, et en plan, un mécanisme d'affichage rétrograde selon l'invention, dans une application particulière à un premier mécanisme d'affichage des minutes traînant et rétrograde, et à un deuxième affichage des heures sautant et rétrograde;
  • la figure 2 représente le mécanisme de la figure 1, de façon schématisée, et en coupe partielle au voisinage des différents axes de pivotement de la figure 1,
  • la figure 3 représente, de façon schématisée, et en plan, une première variante d'une montre selon l'invention ;
  • la figure 4 représente, de façon schématisée, et en plan, une deuxième variante d'une montre selon l'invention ;
  • la figure 5 est un schéma-blocs représentant une montre, comportant un tel mouvement d'horlogerie entraînant un tel mécanisme d'affichage.
Other characteristics and advantages of the invention will become apparent on reading the detailed description which follows, with reference to the appended drawings, where:
  • the figure 1 represents, schematically and in plan, a retrograde display mechanism according to the invention, in a particular application to a first trailing and retrograde minute display mechanism, and to a second jumping and retrograde hours display;
  • the figure 2 represents the mechanism of figure 1 , schematically, and in partial section in the vicinity of the various pivot axes of the figure 1 ,
  • the figure 3 represents, schematically and in plan, a first variant of a watch according to the invention;
  • the figure 4 represents, schematically and in plan, a second variant of a watch according to the invention;
  • the figure 5 is a block diagram representing a watch, comprising such a clockwork movement driving such a display mechanism.

Description détaillée des modes de réalisation préférésDetailed description of the preferred embodiments

L'invention concerne un mécanisme d'affichage 100 d'horlogerie, pour une pièce d'horlogerie 1000, et plus particulièrement pour une montre.The invention relates to a clockwork display mechanism 100, for a timepiece 1000, and more particularly for a watch.

Ce mécanisme d'affichage 100 comporte au moins un premier moyen d'entraînement rétrograde 10 d'un premier afficheur 11 d'une première grandeur, et un deuxième moyen d'entraînement rétrograde 20 d'un deuxième afficheur 21 d'une deuxième grandeur.This display mechanism 100 comprises at least a first retrograde drive means 10 of a first display 11 of a first size, and a second retrograde drive means 20 of a second display 21 of a second size.

L'invention est illustrée sur les figures pour une variante non limitative où la première grandeur est la minute, et où la deuxième grandeur est l'heure.The invention is illustrated in the figures for a non-limiting variant where the first quantity is the minute, and where the second quantity is the hour.

Le premier moyen d'entraînement rétrograde 10 comporte un premier râteau d'entraînement 12, qui est agencé pour exercer, directement ou indirectement, sur un premier mobile 16 d'entraînement du premier afficheur 11, un effort opposé à un effort résistant exercé par un premier râteau de rappel 17.The first retrograde drive means 10 comprises a first drive rake 12, which is arranged to exert, directly or indirectly, on a first drive wheel 16 of the first display 11, a force opposed to a resistant force exerted by a first recall rake 17.

Et le deuxième moyen d'entraînement rétrograde 20 comporte un deuxième râteau d'entraînement 26, qui est agencé pour exercer, directement ou indirectement, sur un deuxième mobile 210 d'entraînement du deuxième afficheur 21, un effort opposé à un effort résistant exercé par un deuxième râteau de rappel 29.And the second retrograde drive means 20 comprises a second drive rake 26, which is arranged to exert, directly or indirectly, on a second drive wheel 210 of the second display 21, a force opposed to a resistant force exerted by a second booster rake 29.

De façon particulière, et tel que visible sur les figures, le premier mobile 16 et le deuxième mobile 210 sont coaxiaux selon un axe de pivotement D0. Plus particulièrement encore, le premier mobile 16 et le deuxième mobile 210 sont coaxiaux avec une chaussée que comporte un mouvement d'horlogerie 500, agencé pour entraîner le mécanisme d'affichage 100, ou auquel est incorporé ce mécanisme d'affichage 100, selon ce même axe de pivotement D0.In particular, and as shown in the figures, the first mobile 16 and the second mobile 210 are coaxial along a pivot axis D0. More particularly still, the first mobile 16 and the second mobile 210 are coaxial with a roadway that comprises a clockwork movement 500, arranged to drive the display mechanism 100, or in which this display mechanism 100 is incorporated, according to this. same pivot axis D0.

Selon l'invention, l'axe de pivotement du premier râteau d'entraînement 12 est distant de l'axe de pivotement du premier râteau de rappel 17 et/ou l'axe de pivotement du deuxième râteau d'entraînement 26 est distant de l'axe de pivotement du deuxième râteau de rappel 29.According to the invention, the pivot axis of the first drive rake 12 is distant from the pivot axis of the first return rake 17 and / or the pivot axis of the second drive rake 26 is distant from the pivot axis of the second return rake 29.

Dans la variante illustrée par les figures, l'axe de pivotement D1 du premier râteau d'entraînement 12 des minutes est distant de l'axe de pivotement D6 du premier râteau de rappel 17 des minutes, et l'axe de pivotement du deuxième râteau d'entraînement 26 des heures est confondu avec l'axe de pivotement D2 du deuxième râteau de rappel 29 des heures.In the variant illustrated by the figures, the pivot axis D1 of the first drive rake 12 for the minutes is distant from the pivot axis D6 of the first return rake 17 for the minutes, and the pivot axis of the second rake drive 26 hours is coincident with the pivot axis D2 of the second return rake 29 hours.

Plus particulièrement, et tel que visible sur les figures 1 et 2, le premier râteau d'entraînement 12 est agencé pour exercer indirectement sur le premier mobile 16, au travers d'un premier renvoi inverseur 15, d'axe de pivotement D5, engrenant avec le premier mobile 16, un effort opposé à un effort résistant exercé directement sur le premier mobile 16 par le premier râteau de rappel 17.More particularly, and as visible on the figures 1 and 2 , the first drive rake 12 is arranged to exert indirectly on the first mobile 16, through a first reverser 15, of pivot axis D5, meshing with the first mobile 16, a force opposed to a resistant force exerted directly on the first mobile 16 by the first return rake 17.

Dans la variante illustrée par les figures, le deuxième râteau d'entraînement 26 est agencé pour exercer directement sur le deuxième mobile 210 d'entraînement du deuxième afficheur 21, un effort opposé à un effort résistant exercé par le deuxième râteau de rappel 29.In the variant illustrated by the figures, the second drive rake 26 is arranged to exert directly on the second drive wheel 210 of the second display 21, a force opposed to a resistant force exerted by the second return rake 29.

Dans une autre variante non illustrée, le premier râteau d'entraînement 12 est agencé pour exercer directement sur le premier mobile 16 un effort opposé à un effort résistant exercé indirectement sur le premier mobile 16, au travers d'un premier renvoi inverseur de rappel engrenant avec le premier mobile 16, par le premier râteau de rappel 17.In another variant not shown, the first drive rake 12 is arranged to exert directly on the first mobile 16 a force opposed to a resistant force exerted indirectly on the first mobile 16, through a first reversing return gear meshing with the first mobile 16, by the first recall rake 17.

Dans encore une autre variante non illustrée, le deuxième râteau d'entraînement 26 est agencé pour exercer indirectement sur le deuxième mobile 210, au travers d'un deuxième renvoi inverseur engrenant avec le deuxième mobile 210, un effort opposé à un effort résistant exercé directement sur le deuxième mobile 210 par le deuxième râteau de rappel 29.In yet another variant not shown, the second drive rake 26 is arranged to indirectly exert on the second mobile 210, through a second reversing gear meshing with the second mobile 210, a force opposed to a resistant force exerted directly. on the second mobile 210 by the second return rake 29.

Dans encore une autre variante non illustrée, le deuxième râteau d'entraînement 26 est agencé pour exercer directement sur le deuxième mobile 210 un effort opposé à un effort résistant exercé indirectement sur le deuxième mobile 210, au travers d'un deuxième renvoi inverseur de rappel engrenant avec le deuxième mobile 210, par le deuxième râteau de rappel 29.In yet another variant not shown, the second drive rake 26 is arranged to exert directly on the second mobile 210 a force opposed to a resistant force exerted indirectly on the second mobile 210, through a second return reversing return meshing with the second mobile 210, by the second return rake 29.

Dans cette variante illustrée, l'axe de pivotement D1 du premier râteau d'entraînement 12 est distant de l'axe de pivotement D6 du premier râteau de rappel 17, et l'axe de pivotement du premier mobile 16 est situé entre l'axe de pivotement D1 du premier râteau d'entraînement 12 et l'axe de pivotement D6 du premier râteau de rappel 17.In this illustrated variant, the pivot axis D1 of the first drive rake 12 is remote from the pivot axis D6 of the first return rake 17, and the pivot axis of the first mobile 16 is located between the axis of pivoting D1 of the first drive rake 12 and the pivot axis D6 of the first return rake 17.

Plus particulièrement encore, le premier râteau d'entraînement 12 est agencé pour exercer indirectement sur le premier mobile 16, au travers du premier renvoi inverseur 15 engrenant avec le premier mobile 16, un effort opposé à un effort résistant exercé directement sur le premier mobile 16 par le premier râteau de rappel 17, et l'axe de pivotement D5 du premier renvoi inverseur 15 est situé entre l'axe de pivotement D1 du premier râteau d'entraînement 12 et l'axe de pivotement D6 du premier râteau de rappel 17.More particularly still, the first drive rake 12 is arranged to exert indirectly on the first mobile 16, through the first reversing gear 15 meshing with the first mobile 16, a force opposed to a resistant force exerted directly on the first mobile 16. by the first return rake 17, and the pivot axis D5 of the first reversing gear 15 is located between the pivot axis D1 of the first drive rake 12 and the pivot axis D6 of the first return rake 17.

Dans une autre variante non illustrée, l'axe de pivotement du deuxième râteau d'entraînement 26 est distant de l'axe de pivotement du deuxième râteau de rappel 29, et l'axe de pivotement du deuxième mobile 210 est situé entre l'axe de pivotement du deuxième râteau d'entraînement 26 et l'axe de pivotement du deuxième râteau de rappel 29.In another variant not shown, the pivot axis of the second drive rake 26 is remote from the pivot axis of the second return rake 29, and the pivot axis of the second mobile 210 is located between the axis of pivoting of the second drive rake 26 and the pivot axis of the second return rake 29.

Dans encore une autre variante non illustrée, le deuxième râteau d'entraînement 26 est agencé pour exercer indirectement sur le deuxième mobile 210, au travers d'un deuxième renvoi inverseur engrenant avec le deuxième mobile 210, un effort opposé à un effort résistant exercé directement sur le deuxième mobile 210 par le deuxième râteau de rappel 29, et l'axe de pivotement du deuxième renvoi inverseur est situé entre l'axe de pivotement du deuxième râteau d'entraînement 26 et l'axe de pivotement du deuxième râteau de rappel 29.In yet another variant not shown, the second drive rake 26 is arranged to indirectly exert on the second mobile 210, through a second reversing gear meshing with the second mobile 210, a force opposed to a resistant force exerted directly. on the second mobile 210 by the second return rake 29, and the pivot axis of the second reversing gear is located between the pivot axis of the second drive rake 26 and the pivot axis of the second return rake 29 .

Plus particulièrement, et dans la variante de réalisation non limitative illustrée par les figures, le premier moyen d'entraînement rétrograde 10 est agencé pour commander un mouvement traînant et rétrograde du premier afficheur 11, et le deuxième moyen d'entraînement rétrograde 20 est agencé pour commander un mouvement sautant et rétrograde du deuxième afficheur 12.More particularly, and in the non-limiting variant embodiment illustrated by the figures, the first retrograde drive means 10 is arranged to control a dragging and retrograde movement of the first display 11, and the second retrograde drive means 20 is arranged to control a jumping and retrograde movement of the second display 12.

Plus particulièrement, le premier moyen d'entraînement rétrograde 10 comporte une première came 34, laquelle comporte une première rampe 35, qui est agencée pour entraîner un premier palpeur 14 que comporte le premier râteau d'entraînement 12 dans une course de travail dans un premier sens d'entraînement du premier afficheur 11. Ce premier palpeur 14 est ici l'extrémité d'un bras sensiblement perpendiculaire à la direction générale selon laquelle s'étend le premier râteau d'entraînement 12, en son milieu.More particularly, the first retrograde drive means 10 comprises a first cam 34, which comprises a first ramp 35, which is arranged to drive a first feeler 14 which the first drive rake 12 comprises in a working stroke in a first direction of drive of the first display 11. This first feeler 14 is here the end of an arm substantially perpendicular to the general direction in which the first drive rake 12 extends, in its middle.

Cette première came 34 comporte, sur le plus grand diamètre de la première rampe 35, un seuil 36, qui est suivi d'un dégagement 37 de débrayage du premier râteau d'entraînement 12, et qui est agencé pour autoriser le retour du premier palpeur 14 sur le plus petit diamètre de la rampe 35 sous l'action d'un couple de rappel exercé indirectement sur le premier râteau d'entraînement 12 par le premier râteau de rappel 17 lors d'une course de retour à vide du premier râteau de rappel 17. Dans la variante de la figure 1, la première came 34 est une came-escargot.This first cam 34 comprises, on the largest diameter of the first ramp 35, a threshold 36, which is followed by a release 37 for disengaging the first drive rake 12, and which is arranged to allow the return of the first probe. 14 on the smallest diameter of the ramp 35 under the action of a return torque exerted indirectly on the first drive rake 12 by the first return rake 17 during an empty return stroke of the first drive rake. reminder 17. In the variant of figure 1 , the first cam 34 is a snail cam.

Dans cette variante des figures, le premier moyen d'entraînement rétrograde 10 est agencé pour entraîner le deuxième moyen d'entraînement rétrograde 20 par le moyen d'un cliquet. Ce cliquet porte un doigt entraîneur 19, qui est agencé pour entraîner un mobile d'entrée 22, d'axe de pivotement D7, et que comporte le deuxième moyen d'entraînement rétrograde 20, pendant la course de retour à vide.In this variant of the figures, the first retrograde drive means 10 is arranged to drive the second retrograde drive means 20 by means of a pawl. This pawl carries a drive finger 19, which is arranged to drive an input mobile 22, of pivot axis D7, and which the second retrograde drive means 20 comprises, during the empty return stroke.

Plus particulièrement, la première came 34 est entraînée depuis un mobile moteur 30, lequel est agencé pour être entraîné par un mouvement 500, ou que comporte un mouvement 500, et notamment par l'intermédiaire d'un rouage. Plus particulièrement, le rouage comporte au moins une liaison à friction agencée pour autoriser un réglage de la position du premier afficheur 11. Naturellement, une liaison à friction similaire peut être insérée ailleurs, dans le rouage d'entraînement du premier afficheur 11, et/ou du deuxième afficheur 21, ou de tout autre afficheur que comporte le mécanisme d'affichage 100.More particularly, the first cam 34 is driven from a mobile motor 30, which is arranged to be driven by a movement 500, or which comprises a movement 500, and in particular by means of a gear train. More particularly, the gear train comprises at least one friction link arranged to allow adjustment of the position of the first display 11. Naturally, a similar friction link can be inserted elsewhere, in the drive train of the first display 11, and / or the second display 21, or any other display that the display mechanism 100 includes.

Le rouage comporte, dans la variante des figures, depuis le mobile moteur 30, une roue à friction 31 et un mobile à friction 32, la roue 31 engrène avec un pignon 33, d'axe de pivotement D4, porteur de la première came 34.The gear train comprises, in the variant of the figures, from the motor wheel 30, a friction wheel 31 and a friction wheel 32, the wheel 31 meshes with a pinion 33, of pivot axis D4, carrying the first cam 34 .

De façon particulière, tel que visible sur la figure 1, le premier râteau de rappel 17 porte le doigt entraîneur 19, qui est pivotant et est soumis au couple d'un ressort de rappel 43 fixé sur le premier râteau de rappel 17, et qui est en appui sur un bossage 44 ou similaire. Ce doigt entraîneur 19 est agencé pour entraîner une étoile que comporte le mobile d'entrée 22, et qui est agencée pour entraîner en rotation une deuxième came 23 que comporte le deuxième moyen d'entraînement rétrograde 20.In particular, as visible on the figure 1 , the first return rake 17 carries the drive finger 19, which is pivoting and is subjected to the torque of a return spring 43 fixed to the first return rake 17, and which is supported on a boss 44 or the like. This drive finger 19 is arranged to drive a star which the input mobile 22 comprises, and which is arranged to drive in rotation a second cam 23 which the second retrograde drive means 20 comprises.

Plus particulièrement, la deuxième came 23 comporte une deuxième rampe, qui est agencée pour entraîner un deuxième palpeur 27, que comporte le deuxième râteau d'entraînement 26, dans une course de travail dans un premier sens d'entraînement du deuxième afficheur 12. Ce deuxième palpeur 27 est ici l'extrémité d'un bras incliné d'environ 60° avec la direction générale du deuxième râteau d'entraînement 26, en son milieu.More particularly, the second cam 23 comprises a second ramp, which is arranged to drive a second feeler 27, which the second drive rake 26 comprises, in a working stroke in a first direction of drive of the second display 12. This second feeler 27 is here the end of an arm inclined by approximately 60 ° with the general direction of the second drive rake 26, in its middle.

Cette deuxième came 23 comporte, sur le plus grand diamètre de la deuxième rampe, un seuil 24 suivi d'un dégagement 25 de débrayage du deuxième râteau d'entraînement 26, et qui est agencé pour autoriser le retour du deuxième palpeur 27 sur le plus petit diamètre de la rampe 35 sous l'action d'un couple de rappel exercé indirectement sur le premier râteau d'entraînement 12 par le premier râteau de rappel 17 lors d'une course de retour à vide du premier râteau de rappel 17.This second cam 23 comprises, on the largest diameter of the second ramp, a threshold 24 followed by a disengagement 25 of the second drive rake 26, and which is arranged to allow the return of the second probe 27 on the plus small diameter of the ramp 35 under the action of a return torque exerted indirectly on the first drive rake 12 by the first return rake 17 during an empty return stroke of the first return rake 17.

En somme, le doigt entraîneur 19 est embrayé avec le mobile d'entrée 22 pendant la course de retour à vide, et débrayé de ce mobile d'entrée 22 pendant la course de travail.In short, the drive finger 19 is engaged with the input mobile 22 during the empty return stroke, and disengaged from this input mobile 22 during the working stroke.

Dans une variante, tel que visible sur la figure 1, la deuxième came 23 est une came escargot dont la deuxième rampe est lisse.In a variant, as seen on the figure 1 , the second cam 23 is a snail cam whose second ramp is smooth.

Dans une autre variante non illustrée, la deuxième rampe de la deuxième came 23 est une came étagée comportant un étage pour chaque unité de la deuxième grandeur.In another variant not shown, the second ramp of the second cam 23 is a stepped cam comprising a stage for each unit of the second quantity.

Plus particulièrement, le premier râteau de rappel 17 est soumis en permanence au couple de rappel exercé par un premier ressort-sautoir 41, par exemple en appui sur un bossage ou une première goupille 42 ; et le deuxième râteau de rappel 29 est plus particulièrement soumis en permanence au couple de rappel exercé par un deuxième ressort-sautoir 47, en appui sur une deuxième goupille 48, ou similaire.More particularly, the first return rake 17 is permanently subjected to the return torque exerted by a first jumper spring 41, for example resting on a boss or a first pin 42; and the second return rake 29 is more particularly permanently subjected to the return torque exerted by a second spring-jumper 47, resting on a second pin 48, or the like.

Dans une variante non illustrée, à la fois l'axe de pivotement du premier râteau d'entraînement 12 est distant de l'axe de pivotement du premier râteau de rappel 17, et l'axe de pivotement du deuxième râteau d'entraînement 26 est distant de l'axe de pivotement du deuxième râteau de rappel 29.In a variant not shown, both the pivot axis of the first drive rake 12 is remote from the pivot axis of the first return rake 17, and the pivot axis of the second drive rake 26 is remote from the pivot axis of the second return rake 29.

La variante non limitative illustrée concerne le cas où le premier afficheur 11 est un afficheur de minutes, et le deuxième afficheur 21 est un afficheur d'heures.The non-limiting variant illustrated relates to the case where the first display 11 is a minute display, and the second display 21 is an hour display.

Dans une autre variante non illustrée, le premier afficheur 11 est un afficheur d'heures, et le deuxième afficheur 21 est un afficheur AM/PM ou jour/nuit ou de quantième.In another variant, not illustrated, the first display 11 is an hour display, and the second display 21 is an AM / PM or day / night or date display.

Dans encore une autre variante non illustrée, le premier afficheur 11 est un afficheur AM/PM ou jour/nuit ou de quantième, et le deuxième afficheur 21 est un afficheur de mois ou de mois lunaire.In yet another variant not illustrated, the first display 11 is an AM / PM or day / night or date display, and the second display 21 is a month or lunar month display.

Dans encore une autre variante non illustrée, le premier afficheur 11 est un afficheur de mois ou de mois lunaire, et le deuxième afficheur 21 est un afficheur d'année.In yet another variant, not shown, the first display 11 is a month or lunar month display, and the second display 21 is a year display.

Plus particulièrement, le mécanisme d'affichage 100 comporte un affichage de quantième, qui comporte un renvoi à friction, avec une roue à friction 31 et un mobile de friction 32, selon l'axe D3, et lequel renvoi à friction est incorporé dans le rouage entre le mobile moteur 30 et la première came 34.More particularly, the display mechanism 100 comprises a date display, which includes a friction gear, with a friction wheel 31 and a friction wheel 32, along the axis D3, and which friction gear is incorporated in the cog between the mobile motor 30 and the first cam 34.

Dans cet exemple particulier, l'information est prise sur la chaussée du mouvement, la friction du quantième est utilisée en tant que renvoi jusqu'au pignon 33 du mobile de première came 34. Cette première came 34 tourne à 360° et entraîne le premier palpeur 14 du premier râteau d'entraînement 12 sur une course ici d'environ 25°. Cet angle, rapporté au centre de l'affichage sur l'axe de pivotement D0 par la denture 13 du premier râteau d'entraînement 12, en combinaison avec le premier renvoi 15 et le premier mobile 16, affiche les minutes sur une amplitude angulaire de 140°, tel que visible sur la figure 3. Son rappel se fait avec le premier râteau de rappel 17, l'affichage de la minute est ainsi traînant et rétrograde.In this particular example, the information is taken on the roadway of the movement, the date friction is used as a reference to the pinion 33 of the first cam mobile 34. This first cam 34 rotates 360 ° and drives the first. feeler 14 of the first drive rake 12 on a stroke here about 25 °. This angle, referred to the center of the display on the pivot axis D0 by the toothing 13 of the first drive rake 12, in combination with the first return 15 and the first mobile 16, displays the minutes over an angular amplitude of 140 °, as visible on the figure 3 . It is recalled with the first recall rake 17, the minute display is thus dragging and retrograde.

Le premier râteau de rappel 17 s'arme avec la menée des minutes, son cliquet embarqué déclique sur l'étoile des heures rétrogrades 22 lors de son chargement, sans l'entraîner. Après une durée de 60 minutes la chute du premier râteau de rappel 17 entraîne son cliquet embarqué, dont le doigt entraîneur 19 percute l'étoile 22, et lui applique sa rotation. Un sautoir 46 combiné à un ressort de sautoir 45 permet le maintien en position de l'étoile 22 après sa rotation. Lors de chaque saut, l'étoile 22, qui a ici douze dents, tourne de 1/12 de tour. Le deuxième râteau d'entraînement 26, coaxial avec le deuxième râteau de rappel 29 selon l'axe de pivotement D2, prend l'information sur la deuxième came 23, solidaire en pivotement de l'étoile des heures 22, par son deuxième palpeur 27, et affiche précisément chaque heure sur un affichage de 140°. L'affichage de l'heure est sautant et rétrograde.The first recall rake 17 is armed with the minute drive, its on-board pawl clicks on the retrograde hours star 22 when it is loaded, without dragging it. After a period of 60 minutes, the fall of the first return rake 17 drives its on-board pawl, the driving finger 19 of which strikes the star 22, and applies its rotation to it. A jumper 46 combined with a jumper spring 45 allows the star 22 to be held in position after its rotation. During each jump, the star 22, which here has twelve teeth, turns 1/12 of a turn. The second drive rake 26, coaxial with the second return rake 29 along the pivot axis D2, takes the information on the second cam 23, pivotally secured to the hour star 22, by its second feeler 27 , and accurately displays every hour on a 140 ° display. The time display is jumping and retrograde.

L'invention concerne encore un mouvement d'horlogerie 500 comportant au moins un tel mécanisme d'affichage 100. Plus particulièrement, ce mouvement 500 comporte un mobile d'entrée 30, qui est agencé pour entraîner le premier moyen d'entraînement rétrograde 10.The invention also relates to a timepiece movement 500 comprising at least one such display mechanism 100. More particularly, this movement 500 comprises an input mobile 30, which is arranged to drive the first retrograde drive means 10.

L'invention concerne encore une pièce d'horlogerie, notamment une montre 1000, comportant un tel mouvement 500, et/ou au moins un tel mécanisme d'affichage 100. Plus particulièrement, le mouvement d'horlogerie 500 est agencé pour entraîner un mobile d'entrée 30 du mécanisme d'affichage 100.The invention also relates to a timepiece, in particular a watch 1000, comprising such a movement 500, and / or at least one such display mechanism 100. More particularly, the timepiece movement 500 is designed to drive a mobile. input 30 of the display mechanism 100.

Claims (23)

  1. Timepiece display mechanism (100) including at least a first retrograde drive means (10) for a first display member (11) displaying a first magnitude, and a second retrograde drive means (20) for a second display member (21) displaying a second magnitude, said first retrograde drive means (10) including a first drive rack (12) arranged to exert, directly or indirectly, on a first mobile component (16) driving said first display member (11), an opposite force to a resistance force exerted by a first return rack (17), and said second retrograde drive means (20) including a second drive rack (26) arranged to exert, directly or indirectly, on a second mobile component (210) driving said second display member (21), an opposite force to a resistance force exerted by a second return rack (29), the pivot axis of said first drive rack (12) being remote from the pivot axis of said first return rack (17) and/or the pivot axis of said second drive rack (26) being remote from the pivot axis of said second return rack (29), characterized in that said first retrograde drive means (10) includes a first cam (34) including a first ramp (35) arranged to drive a first feeler arm (14) comprised in said first drive rack (12) in an operating stroke in a first drive direction of said first display member (11), and which includes, on the largest diameter of said first ramp (35), a threshold (36) followed by a recess (37) for uncoupling of said first drive rack (12) arranged to allow said first feeler arm (14) to return to the smallest diameter of said ramp (35) by means of a return torque exerted indirectly on said first drive rack (12) by said first return rack (17) during an idle return stroke of said first return rack (17), and in that said first retrograde drive means (10) is arranged to drive said second retrograde drive means (20) by means of a click carrying a drive finger (19) arranged to drive an input mobile component (22) comprised in said second retrograde drive means (20) during said idle return travel.
  2. Timepiece display mechanism (100) according to claim 1, characterized in that said first cam (34) is driven from a drive mobile component (30) arranged to be driven by a movement (500) or comprised in a movement (500).
  3. Timepiece display mechanism (100) according to claim 2, characterized in that said first cam (34) is driven from said drive mobile component (30) via a train, which includes at least one friction connection arranged to allow adjustment of the position of said first display member (11).
  4. Timepiece display mechanism (100) according to any of claims 1 to 3, characterized in that said first return rack (17) carries said drive finger (19) which pivots and is subjected to the torque of a return spring (43) fixed to said first return rack (17), and said drive finger (19) is arranged to drive a star comprised in said input mobile component (22) and which is arranged to drive in rotation a second cam (23) comprised in said second retrograde drive means (20).
  5. Timepiece display mechanism (100) according to any of claims 1 to 4, characterized in that said second cam (23) includes a second ramp arranged to drive a second feeler arm (27) comprised in said second drive rack (26) in an operating stroke in a first drive direction of said second display member (12), and which includes, on the largest diameter of said second ramp, a threshold (24) followed by a recess (25) for uncoupling of said second drive rack (26) arranged to allow said second feeler arm (27) to return to the smallest diameter of said ramp (35) by means of a return torque exerted indirectly on said first drive rack (12) by said first return rack (17) during an idle return stroke of said first return rack (17), and in that said first retrograde drive means (10) is arranged to drive said second retrograde drive means (20) by means of said drive finger (19), which is coupled to said input mobile component (22) during said idle return stroke, and which is uncoupled from said input mobile component (22) during said operating stroke.
  6. Timepiece display mechanism (100) according to claim 5, characterized in that said second cam (23) is a snail cam whose said second ramp is smooth.
  7. Timepiece display mechanism (100) according to claim 5, characterized in that said second ramp of said second cam (23) is a stepped cam including a step for each unit of said second magnitude.
  8. Timepiece display mechanism (100) according to any of claims 1 to 7, characterized in that said first drive rack (12) is arranged to indirectly exert on said first mobile component (16), via a first intermediate reverser (15) meshing with said first mobile component (16), an opposite force to a resistance force exerted directly on said first mobile component (16) by said first return rack (17), or in that said first drive rack (12) is arranged to exert directly on said first mobile component (16) an opposite force to a resistance force exerted indirectly on said first mobile component (16), via a first, intermediate return reverser meshing with said first mobile component (16), via said first return rack (17).
  9. Timepiece display mechanism (100) according to any of claims 1 to 8, characterized in that said second drive rack (26) is arranged to exert indirectly on said second mobile component (210), via a second intermediate reverser meshing with said second mobile component (210), an opposite force to a resistance force exerted directly on said second mobile component (210) by said second return rack (29), or in that said second drive rack (26) is arranged to exert directly on said second mobile component (210) an opposite force to a resistance force exerted indirectly on said second mobile component (210),via a second intermediate return reverser meshing with said second mobile component (210), via said second return rack (29).
  10. Timepiece display mechanism (100) according to any of claims 1 to 9, characterized in that said pivot axis (D1) of said first drive rack (12) is remote from the pivot axis (D6) of said first return rack (17), and in that the pivot axis of said first mobile component (16) is located between the pivot axis (D1) of said first drive rack (12) and the pivot axis (D6) of said first return rack (17).
  11. Timepiece display mechanism (100) according to claim 10, characterized in that said first drive rack (12) is arranged to exert indirectly on said first mobile component (16), via a first intermediate reverser (15) meshing with said first mobile component 16), an opposite force to a resistance force exerted directly on said first mobile component (16) by said first return rack (17), and in that the pivot axis (D5) of said first intermediate reverser (15) is located between the pivot axis (D1) of said first drive rack (12) and the pivot axis (D6) of said first return rack (17).
  12. Timepiece display mechanism (100) according to any of claims 1 to 11, characterized in that the pivot axis of said second drive rack (26) is remote from the pivot axis of said second return rack (29), and in that the pivot axis of said second mobile component (210) is located between the pivot axis of said second drive rack (26) and the pivot axis of said second return rack (29).
  13. Timepiece display mechanism (100) according to claim 12, characterized in that said second drive rack (26) is arranged to exert indirectly on said second mobile component (210), via a second intermediate reverser meshing with said second mobile component (210), an opposite force to a resistance force exerted directly on said second mobile component (210) by said second return rack (29), and in that the pivot axis of said second intermediate reverser is located between the pivot axis of said second drive rack (26) and the pivot axis of said second return rack (29).
  14. Timepiece display mechanism (100) according to any of claims 1 to 13, characterized in that said first retrograde drive means (10) is arranged to control a continuous-type retrograde movement of said first display member (11), and in that said second retrograde drive means (20) is arranged to control a jumping retrograde movement of said second display member (12).
  15. Timepiece display mechanism (100) according to any of claims 1 to 14, characterized in that said first return rack (17) is permanently subjected to the return torque exerted by a first jumper spring (41), and in that said second return rack (29) is permanently subjected to the return torque exerted by a second jumper spring (47).
  16. Timepiece display mechanism (100) according to any of claims 1 to 15, characterized in that the pivot axis of said first drive rack (12) is remote from the pivot axis of said first return rack (17) and the pivot axis of said second drive rack (26) is also remote from the pivot axis of said second return rack (29).
  17. Timepiece display mechanism (100) according to any of claims 1 to 16, characterized in that said first display member (11) is a minute display member and said second display member (21) is an hour display member.
  18. Timepiece display mechanism (100) according to any of claims 1 to 16, characterized in that said first display member (11) is an hour display member, and said second display member (21) is an AM/PM or day/night or date display member.
  19. Timepiece display mechanism (100) according to any of claims 1 to 16, characterized in that said first display member (11) is an AM/PM or day/night or date display member, and said second display member (21) is a month or lunar month display member.
  20. Timepiece display mechanism (100) according to any of claims 1 to 16, characterized in that said first display member (11) is a month or lunar month display member, and said second display member (21) is a year display member.
  21. Timepiece display mechanism (100) according to claim 10 and to any of claims 1 to 20, characterized in that said display mechanism (100) includes a date display including an intermediate friction wheel which is incorporated in said train between said drive mobile component (30) and said first cam (34).
  22. Timepiece movement (500) including at least one timepiece display mechanism (100) according to any of claims 1 to 21 and including an input mobile component (30) arranged to drive said first retrograde display means (10).
  23. Watch (1000) including a movement (500) according to claim 22, and/or at least one display mechanism (100) according to any of claims 1 to 21 and a timepiece movement (500) arranged to drive an input mobile component (30) of said display mechanism (100).
EP18161388.6A 2018-03-13 2018-03-13 Retrograde display mechanism for a timepiece Active EP3540522B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP18161388.6A EP3540522B1 (en) 2018-03-13 2018-03-13 Retrograde display mechanism for a timepiece
JP2019042364A JP6694534B2 (en) 2018-03-13 2019-03-08 Retrograde display mechanism for timekeeping
KR1020190028062A KR102197430B1 (en) 2018-03-13 2019-03-12 Retrograde display mechanism for horology
CN201910191104.8A CN110275423B (en) 2018-03-13 2019-03-12 Timepiece display mechanism, and timepiece movement and watch including the same
US16/299,185 US11320787B2 (en) 2018-03-13 2019-03-12 Retrograde display mechanism for horology
RU2019106777A RU2708531C1 (en) 2018-03-13 2019-03-12 Retrograde display mechanism for watchmaking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18161388.6A EP3540522B1 (en) 2018-03-13 2018-03-13 Retrograde display mechanism for a timepiece

Publications (2)

Publication Number Publication Date
EP3540522A1 EP3540522A1 (en) 2019-09-18
EP3540522B1 true EP3540522B1 (en) 2020-10-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18161388.6A Active EP3540522B1 (en) 2018-03-13 2018-03-13 Retrograde display mechanism for a timepiece

Country Status (6)

Country Link
US (1) US11320787B2 (en)
EP (1) EP3540522B1 (en)
JP (1) JP6694534B2 (en)
KR (1) KR102197430B1 (en)
CN (1) CN110275423B (en)
RU (1) RU2708531C1 (en)

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CH719985A1 (en) * 2022-08-24 2024-02-29 Van Cleef & Arpels SA Device for coordinated actuation of two mechanisms of a timepiece

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Also Published As

Publication number Publication date
CN110275423A (en) 2019-09-24
KR20190108064A (en) 2019-09-23
KR102197430B1 (en) 2021-01-04
US20190286056A1 (en) 2019-09-19
US11320787B2 (en) 2022-05-03
JP6694534B2 (en) 2020-05-13
EP3540522A1 (en) 2019-09-18
JP2019158883A (en) 2019-09-19
CN110275423B (en) 2021-03-30
RU2708531C1 (en) 2019-12-09

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